# Built-in Extension List

This section lists all the built-in Extensions of Umo Editor, including Tiptap official Extensions, Umo Editor extended Extensions, and third-party Extensions used.

## Tiptap Official Extensions

| Extension Name | Description |
| --- | --- |
| @tiptap/starter-kit | Basic extension set of Tiptap, including paragraph, heading, emphasis, and other basic editing features |
| @tiptap/extension-placeholder | Displays placeholder text in the editor when there is no content, guiding users to input |
| @tiptap/extension-focus | Manages the focus state of the editor |
| @tiptap/extension-font-family | Allows users to customize the font family of text |
| @tiptap/extension-bold | Adds bold styling to text |
| @tiptap/extension-underline | Adds underline styling to text |
| @tiptap/extension-subscript | Supports subscript text formatting |
| @tiptap/extension-superscript | Supports superscript text formatting |
| @tiptap/extension-color | Adds color to text |
| @tiptap/extension-text-style | Adds HTML tags to text |
| @tiptap/extension-highlight | Adds background color to text to highlight important information |
| @tiptap/extension-task-item | Creates checkable task list items |
| @tiptap/extension-task-list | Manages task lists and supports task completion status |
| @tiptap/extension-link | Inserts and edits hyperlinks, supporting URLs and anchor links |
| @tiptap/extension-table | Implements table insertion and editing, including row and column operations |
| @tiptap/extension-table-row | Specifically manages row operations in tables |
| @tiptap/extension-typography | Provides advanced typography features such as quotes and ellipses |
| @tiptap/extension-character-count | Displays real-time character, word, or text count in the editor |
| @tiptap/extension-dropcursor | Enhances user experience with drag-and-drop cursor effects, indicating insertion positions |

## Tiptap Official Pro Extensions

| Extension Name | Description |
| --- | --- |
| @tiptap-pro/extension-table-of-contents | Creates a table of contents for the editor |
| @tiptap-pro/extension-invisible-characters | Manages invisible characters |
| @tiptap-pro/extension-mathematics | Inserts and edits LaTeX mathematical formulas |

## Umo Editor Extended Extensions

All Extension can be found at: https://github.com/umodoc/editor/tree/main/src/components/editor/extensions

| Extension Name | Description |
| --- | --- |
| font-size | Allows users to customize the font size of text |
| bullet-list | Provides unordered list functionality for creating bullet point lists |
| ordered-list | Supports ordered lists, arranging items in numerical or alphabetical order |
| indent | Implements text or list item indentation to add hierarchy |
| text-align | Controls text alignment, including left, center, right, and justified alignment |
| node-align | Aligns nodes within the editor, such as images or blocks |
| line-height | Sets line spacing for text to enhance readability |
| image | Inserts, adjusts, and displays image files |
| video | Inserts, adjusts, and displays video files, supporting video playback |
| audio | Inserts, adjusts, and displays audio files, supporting playback controls |
| file | Inserts and displays other types of files |
| code-block | A code block editing Extension that supports code editing and syntax highlighting |
| text-box | Inserts and edits text boxes |
| horizontal-rule | Inserts horizontal lines to separate content |
| iframe | Supports embedding external web pages or applications via Iframe |
| table-cell | Edits and formats table cells |
| table-header | Manages table header rows and columns |
| page-break | Inserts page breaks in the document |
| toc | Automatically generates a document outline table of contents |
| invisible-node | Displays invisible characters such as line breaks and carriage returns |
| selection | Provides actions for text and node selection |
| file-handler | Handles file drag-and-drop and paste logic |

## Third-party Extensions

| Extension Name | Description |
| --- | --- |
| @sereneinserenade/tiptap-search-and-replace | Searches and replaces specified text within the editor content |